MC9S08GB60ACFUE Freescale Semiconductor, MC9S08GB60ACFUE Datasheet - Page 118
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MC9S08GB60ACFUE
Manufacturer Part Number
MC9S08GB60ACFUE
Description
IC MCU 60K FLASH 4K RAM 64-LQFP
Manufacturer
Freescale Semiconductor
Series
HCS08r
Datasheet
1.MC9S08GT60ACFDER.pdf
(302 pages)
Specifications of MC9S08GB60ACFUE
Core Processor
HCS08
Core Size
8-Bit
Speed
40MHz
Connectivity
I²C, SCI, SPI
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
56
Program Memory Size
60KB (60K x 8)
Program Memory Type
FLASH
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-LQFP
Processor Series
S08GB
Core
HCS08
Data Bus Width
8 bit
Data Ram Size
4 KB
Interface Type
SCI/SPI
Maximum Clock Frequency
40 MHz
Number Of Programmable I/os
56
Number Of Timers
8
Operating Supply Voltage
0 V to 1.8 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWS08
Development Tools By Supplier
M68EVB908GB60E, M68DEMO908GB60E
Minimum Operating Temperature
- 40 C
On-chip Adc
8-ch x 10-bit
For Use With
M68DEMO908GB60E - BOARD DEMO MC9S08GB60M68EVB908GB60E - BOARD EVAL FOR MC9S08GB60
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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Internal Clock Generator (S08ICGV2)
7.4.2
In this example, the FLL will be used (in FEE mode) to multiply the external 32 kHz oscillator up to
8.38 MHz to achieve 4.19 MHz bus frequency.
After the MCU is released from reset, the ICG is in self-clocked mode (SCM) and supplies approximately
8 MHz on ICGOUT, which corresponds to a 4 MHz bus frequency (f
The clock scheme will be FLL engaged, external (FEE). So
Solving for N / R gives:
The values needed in each register to set up the desired operation are:
ICGC1 = $38 (%00111000)
ICGC2 = $00 (%00000000)
ICGS1 = $xx
ICGS2 = $xx
ICGFLTLU/L = $xx
ICGTRM = $xx
118
Bit 7
Bit 6
Bit 5
Bits 4:3 CLKS
Bit 2
Bit 1
Bit 0
Bit 7
Bits 6:4 MFD
Bit 3
Bits 2:0 RFD
This is read only except for clearing interrupt flag
This is read only; should read DCOS = 1 before performing any time critical tasks
Only needed in self-clocked mode; FLT will be adjusted by loop to give 8.38 MHz DCO clock
Bits 15:12 unused
Bits 11:0 FLT
Bits 7:0
Example #1: External Crystal = 32 kHz, Bus Frequency = 4.19 MHz
HGO
RANGE
REFS
OSCSTEN 0
LOCD
LOLRE
LOCRE
TRIM
N / R = 8.38 MHz /(32 kHz * 64) = 4 ; we can choose N = 4 and R =1
0
0
1
11
0
0
0
000 Sets the MFD multiplication factor to 4
0
000 Sets the RFD division factor to ÷1
0000
No need for user initialization
Only need to write when trimming internal oscillator; not used when external
crystal is clock source
f
ICGOUT
Configures oscillator for low-power operation
Configures oscillator for low-frequency range; FLL prescale factor is 64
Oscillator using crystal or resonator is requested
FLL engaged, external reference clock mode
Oscillator disabled in stop modes
Loss-of-clock detection enabled
Unimplemented or reserved, always reads zero
Generates an interrupt request on loss of lock
Generates an interrupt request on loss of clock
= f
ext
MC9S08GB60A Data Sheet, Rev. 2
* P * N / R ; P = 64, f
ext
= 32 kHz
Bus
).
Freescale Semiconductor
Eqn. 7-1
Eqn. 7-2
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